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REVERSING DEVICE.

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UNITED STATES PATENT Erica JHN W. GRAW, OF NEW YORK, N. Y.

REVERSING DEVICE.

SPECIFICATION forming part of Letters Patent No. 602,830, dated April 26, 1898.

Application led. June l2, 1897. Serial No. 640,441. (No model.)

To all when?. t may concern,.-

Be it known that I, JOHN W. GRAW, a citizen of the United States, residing at New York, in the county of New York'and State of New 'York, have invented certain new and useful Improvements in Reversing Devices; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

My invention relates to an improvement in the reversible motion for rotary washers and the object of my invention is by this device of mine to lessen the friction in the reversible movement of the inside washing-cylinder of a rotary washer. In the reversible motion now used on rotary washers only a limited number of revolutions is obtained, generally from two to two and one-fourth revolutions being given to said cylinder, whereas my device has been furnished with a regulating mechanism that can increase or decrease the number of revolutions, according to the individual requirements of each rotary washer.

The mechanical element directly recipient of this change of revolving motion is a frictiondisk, thelargest of a set of three, and this can be attached to the shaft of the inside rotary washing-cylinder. The power yielding motion to this mechanical combination is applied to the pulley R in the usual manner.

In describing my inventionI will call attention to the accompanying drawings, wherein like letters of reference indicate corresponding parts in the different views, and wherein- Figure l shows a top view of any ordinary rotary washer with my improved reversing device attached to it; Fig. 2, an end view of the rotary wash er with the frame holding my reversing motion bolted thereto; Fig. 3, a front view of my improved reversing motion detached from the rotary washer and with parts cut away according to the broken line :c fr, shown in Fig. 4; Fig. 4, a top or plan view of Fig. 3; Fig. 7, a side view of Fig. 4; Fig. 5A, a side view of one of the forks engaging the bevel-gears or friction-disks; Fig. 5B, a top view of Fig. 5A; Fig. 6A, a side view of one of the arms carrying a roller acting on a cam C, and Fig. 6B a top view of Fig. 6A.

In Fig. l, A represents the outside cylinder of a rotary washer; A', the inside washingcylinder proper; A2, the shaft on which the inside cylinder A is mounted, and secured to this shaft in a suitable mechanical manner is the friction-disk A3, or, as will be shown later on, the bevel-gear S.

In Fig. 4, which is the plan view of my reversing device and the most explanatory iigure, A3 represents la friction-disk which, as above stated, is attached by any suitable means to the shaft A2. B and B' are companion friction-disks mounted on a shaft D, which, alternately engaging the disk A3, will give an alternately left and right motion to disk A3. The disks B and B have a free longitudinal movement on shaft D, provided by their being fitted loose over keys D' and D2, secured in shaft D.

D is a shaft secured in bearings E and E2, said bearings being bolted to a framework F.

Gis a worm-screw secured to a shaft D, and Il the worm-pinion. To this worm-pinion Il there is iirmly attached on the under side a cam C, of whose circumference one-half is cut down to a radius proportionately smaller in regard to the lateral throw required to bring the friction-disk B into contact with the large disk A3. simultaneously with bringing the friction-disk B' out of contact with A3, and vice versa.

Secured in two bearings I' and l2, attached to the framework F, is a rod K, capable of longitudinal movement in said bearings. To this rod K there is secured two forked arms L' and L2, the prongs of said fork embracing, respectively, a groove Y, cut in a collar, which is part of each of the friction-disks B and B'. The rod K has, furthermore, two arms O and O firmly attached to it, said arms each furnished with a roller P and P', which rollers engage with the circumference of the cam C aforesaid, and as these arms in the first instance are secured firmly to the rod K, so that their individual rollers rest one on the circumference of the cam having the smaller radius, the other diametrically opposite to it on the circumference having the larger radius, the same distance between them will be maintained, and consequently the throw will be ICO represented by the difference between the two radii-to wit, a distance marked Q, the same distance represented by Q' indicating the space that is required to clear the frictiondisks B and B' alternately of the disk A3.

The entire reversible motion will thus be seen to be the following: If the pulley R be revolved so that the worm G, keyed to the shaft D, revolves the worm-pinion H, and consequently the cam C, attached thereunto, in the direction of the arrow-head V, then the roller P', moving on the circumference of the cam O having the larger radius, will be moved in the direction of the arrow-head V', which will result in friction-diskB coming in contact with disk A3 and friction-disk B' being moved out of contact, as in the position shown in Fig. 2. This will continue as long as roller P' runs on the part of the circumference having the larger radius and until it encounters the drop from the larger radius to the smaller radius, when roller` P simultaneously will be caught by the circumference having the larger radius, and consequently will be moved in the direction opposite to the one indicated by the arrow-head V', and the respective small friction-disks occupy the positions as illustrated by the dotted lines in Fig. 2, called B0, when B Will be moved out of contact with the large disk A3, and the space Q' created between them and B' will move into contact with A and revolve it in a direction opposite to the one given it by disk B. In reverting to Fig. l it will thus be seen that if the friction-disk A3 is attached to the inside cylinder A' by being fastened by appropriate means to the same shaft A2 which has the cylinder mounted on it said cylinder will be revolved with the friction-disk-in other words, be controlled by the same reversing motion given to said-wheel A3 by the respective smaller friction-disks B and B', which was the desired object of my invention.

I wish it to be understood that I in no wise lay claim to the invention of a set of frictiondisks where the two smaller disks by adequate means are moved in and out of contact with the larger one, thus alternating its movement from right to left, and vice versa, as shown, for instance, in the patent to Kenna, automatic reversing motion, No. 333,525, dated January 5, 1886; but

`What I do claim, and desire to secure protection for by Letters Patent of the United States, is

In the combination of an automatic reversing mechanism, having a large friction-disk and two smaller friction-disks adapted to be moved into alternate conjunction with the said large disk, a horizontal cam secured to a horizontal lying worm-gear, two arms having rollers moving on the surface of the cam, two forked levers, a longitudinally-movable rod having the roller-arms and forked levers aforesaid attached to it, a hub forming part of each of the smaller friction-disks having a circumferential groove, which said forked 1evers engage, for the purposes specified, substantially as illustrated and described.

In testimony that I claim the foregoing I have hereunto set my hand this 17th day of May,1897.

JOHN W. GRAW. Witnesses:

ANNA KEoK, AUGUST M. TREsoHow. 

